The name of a display property that controls the
backlight on the monochrome display. Possible contents of this property are
the booleans GUI_TRUE
and GUI_FALSE.
BACKLIGHT_ON is
initialized to GUI_TRUE
by Initialize_GUI.

The name of a read-only battery property that
contains the state of the battery. Possible contents of this property are NO_BATTERY,
LOW_BATTERY,
MEDIUM_BATTERY,
and FULL_BATTERY.
Read_Battery
must be called before reading this property to get the latest battery
information.

The name of a buzzer property that controls the
length of time of a beep. The length of the BEEP_TIME
is measured using the 16-bit free running counter accessible via the register
named TCNT. The units of BEEP_TIME
are in counts that are 2 microseconds long. The default BEEP_TIME
is 2 milliseconds or 1000 counts. The range of BEEP_TIME
is from 0 to 65535 or 0 to 131 milliseconds. For longer duration beeps,
manually turn the buzzer on and off using the BUZZER_ON
property.

The name of a key property that when set, disables
the servicing of events when an action key is held down. Use this property for
hold event procedurues that need to read, write, or modify GUI Toolkit
properties. The final line of the hold event procedure must re-enable the
servicing of events by setting the GUI_TOOLKIT
property SERVICE_EVENTS
to GUI_TRUE.
The BLOCK_ON_HOLD
property is set to GUI_FALSE
when the action key is instantiated.

The name of a key property that when set, disables
the servicing of events when an action key is pressed. Use this property for
press event procedurues that need to read, write, or modify GUI Toolkit
properties. The final line of the press event procedure must re-enable the
servicing of events by setting the GUI_TOOLKIT
property SERVICE_EVENTS
to GUI_TRUE.
The BLOCK_ON_PRESS
property is set to GUI_FALSE
when the action key is instantiated.

The name of a key property that when set, disables
the servicing of events until when an action key is released. Use this
property for release event procedurues that need to read, write, or modify GUI
Toolkit properties. The final line of the release event procedure must
re-enable the servicing of events by setting the GUI_TOOLKIT
property SERVICE_EVENTS
to GUI_TRUE.
The BLOCK_ON_RELEASE
property is set to GUI_FALSE
when the action key is instantiated.

The name of a textbox or plot property that draws or
erases a one pixel border around the object. Possible contents of this
property are the booleans GUI_TRUE
and GUI_FALSE.
BOARDER
is initialized to GUI_FALSE
when a plot or a textbox is instantiated.

The name of a display property that controls the
brightness of the backlight once it is on. Possible contents of this property
are the booleans GUI_TRUE
and GUI_FALSE.
BRIGHT_BACKLIGHT
is initialized to GUI_FALSE
by Initialize_GUI.

The name of a plot property that contains the size
of the plot’s circular data buffer in bytes. The size of the buffer is limited
by the amount of heap space of GUI Toolkit or 65,535, whatever is smaller. The
size of the buffer must also be larger than or equal to the pixel width of the
plot object. BUFFER_SIZE
is initialized to 240 when a plot is instantiated.